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May 23, 2018, 13:10 |
Scalar Transport values too large
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#1 |
Member
zobekenobe
Join Date: Mar 2009
Location: Dublin, Ireland
Posts: 72
Rep Power: 17 |
I am trying to solve the simple channel flow with a UDS defined for solute concentration in the flow.
I have used UDF macros to define the boundary conditions and the diffusivity, density and viscosity. I am using the mass flow rate for the convective flux and don't have a source term. The solution converges but the value of the UDS is extremely high (10^7) and the value grows extremely fast (within 5-10 iterations). Can anyone suggest any checks or ways to figure the source of the problem. I strongly feel there is a problem with the UDF but everything seems really fine. |
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